Screen problem

[eugen]

Hello,

I have a Sony XPeria J and I have this screen problem. I see some pointer and coordinates when I tuoch the screen.

Please check pictures provide bellow.

Thank you.

[Henke]

Go to settings, developer options, turn off developer options and the phone is going to act normal again

Reason was: "Pointer location"

[eugen]

Offf...that's stupid...yes that was the problem.

But now I still have a small problem.

When I answer/hang a call there is a red border flashing on my screen. From where can I fix this?

Thank you.

[Henke]

Go to settings, developer options, turn off developer options (up to the right).

Still a red border?